US11749149B2 - Method and device for detecting residual image of a display panel - Google Patents

Method and device for detecting residual image of a display panel Download PDF

Info

Publication number
US11749149B2
US11749149B2 US17/715,531 US202217715531A US11749149B2 US 11749149 B2 US11749149 B2 US 11749149B2 US 202217715531 A US202217715531 A US 202217715531A US 11749149 B2 US11749149 B2 US 11749149B2
Authority
US
United States
Prior art keywords
images
gray scale
matrix
image
display panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US17/715,531
Other languages
English (en)
Other versions
US20220230568A1 (en
Inventor
Zhijuan Huang
Zhixiang Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kunshan Govisionox Optoelectronics Co Ltd
Original Assignee
Kunshan Govisionox Optoelectronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunshan Govisionox Optoelectronics Co Ltd filed Critical Kunshan Govisionox Optoelectronics Co Ltd
Assigned to KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD reassignment KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, ZHIJUAN, WANG, ZHIXIANG
Publication of US20220230568A1 publication Critical patent/US20220230568A1/en
Application granted granted Critical
Publication of US11749149B2 publication Critical patent/US11749149B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0257—Reduction of after-image effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0693—Calibration of display systems

Definitions

  • the present application relates to the technical field of display, and in particular to a method and device for detecting residual image of a display panel.
  • Residual image refers to a phenomenon that after the display panel has displayed an image for a time period, when the display panel switches to another image, the previous image remains and can disappear after a time period.
  • the present application provides a method and device for detecting residual image of a display panel.
  • embodiments of the present application provides a method for detecting residual image of a display panel, including: controlling a display panel to be tested to display a checkerboard image, wherein the checkerboard image includes a plurality of pure-color sub-images arranged in a matrix, and gray scales of any two adjacent pure-color sub-images are a first gray scale and a second gray scale respectively; controlling, after the checkerboard image has been displayed for a first predetermined time period, the display panel to be tested to display a detection image with a predetermined gray scale, wherein the predetermined gray scale is between the first gray scale and the second gray scale; controlling a reference display panel to display a calibration image, wherein the calibration image includes a plurality of first matrix images and a plurality of second matrix images arranged in a matrix, each of the first matrix images and each of the second matrix images are arranged alternately, each of the first matrix images includes a plurality of first cells, the number of the first cells in each of the first matrix images is the same as the number
  • embodiments of the present application further provides a device for detecting residual image of a display panel, including: a control module configured to control a display panel to be tested to switch a checkerboard image to a detection image with a predetermined gray scale after the display panel to be tested has displayed the checkerboard image for a first predetermined time period, wherein the checkerboard image includes a plurality of pure-color sub-images arranged in a matrix, gray scales of any two adjacent pure-color sub-images are a first gray scale and a second gray scale respectively, and the predetermined gray scale is between the first gray scale and the second gray scale; a reference display panel configured to display a calibration image, wherein the calibration image includes a plurality of first matrix images and a plurality of second matrix images arranged in a matrix, each of the first matrix images and each of the second matrix images are arranged alternately, each of the first matrix images includes a plurality of first cells, the number of the first cells in each of the first matrix images is the same as the number of
  • the present application provides a method and device for detecting residual image of a display panel, wherein the method for detecting residual image of a display panel controls a display panel to be tested to display a detection image with a predetermined gray scale after the display panel to be tested has displayed a checkerboard image for a first predetermined time period, and controls a reference display panel to display a calibration image that can define a residual image level.
  • the calibration image can define the residual image level, by making each of the first matrix images include first cells whose number is same as the number of corresponding sub-pixels in each of pure-color sub-images and making a gray scale of each of the first matrix images the same as the predetermined gray scale so as to enable the first matrix images and the pure-color sub-images to have a same display environment and display effect, making each of the second matrix images include second cells whose number is same as the number of corresponding sub-pixels in each of the pure-color sub-images so as to enable the second matrix images and the pure-color sub-images to have a same display environment and display effect, and reasonably setting the number of second cells with a third gray scale and the number of second cells with a fourth gray scale based on a residual image level so as to enable a significant brightness difference between the first matrix images and the second matrix images to be formed, to more accurately perform calibration of residual image of the display panel.
  • the residual image level of the display panel can be objectively and accurately evaluated, so as to provide a reliable basis for a quality evaluation of the display panel.
  • FIG. 1 is a schematic flowchart of a method for detecting residual image of a display panel according to an embodiment of the present application
  • FIG. 2 is an exemplary schematic diagram of displaying a checkerboard image on a display panel to be tested
  • FIG. 3 is an exemplary schematic diagram of displaying a detection image on a display panel to be tested
  • FIG. 4 is an exemplary schematic diagram of displaying a calibration image on a reference display panel
  • FIG. 5 is an enlarged view of Q 1 in FIG. 4 ;
  • FIG. 6 is an enlarged view of Q 2 in FIG. 4 ;
  • FIG. 7 is a schematic flowchart of a method for detecting residual image of a display panel according to another embodiment of the present application.
  • FIG. 8 is a device for detecting residual image of a display panel according to an embodiment of the present application.
  • a manual visual detection method is used to detect a residual image level of a display panel to be tested, that is, the residual image level is judged by visually inspecting a disappearance time of residual image.
  • the manual visual detection method is susceptible to subjective influence of a tester, and the disappearance time of residual image of the display panel to be tested observed by different testers or observed by a same tester at different times may be different, and thus it is difficult to guarantee a stability of test of the residual image level of the display panel to be tested.
  • embodiments of the present application provide a method for detecting residual image of a display panel and a device for detecting residual image of a display panel.
  • the method for detecting residual image of a display panel and the device for detecting residual image of a display panel according to embodiments of the present application will be described in detail with reference to FIGS. 1 to 8 .
  • the display panel in the embodiments may be a liquid crystal display (LCD), an organic light-emitting diode (OLED) display panel or a Micro-LED display panel.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • Micro-LED Micro-LED display panel
  • FIG. 1 shows a schematic flowchart of a method for detecting residual image of a display panel according to an embodiment of the present application.
  • the method for detecting residual image of the display panel in this embodiment includes: S 100 . controlling a display panel to be tested to display a checkerboard image.
  • the first gray scale and the second gray scale may be a maximum value and a minimum value of gray scales that can be displayed on the display panel to be tested, thereby improving an accuracy of detection of residual image of the display panel.
  • One of the first gray scale and the second gray scale may be L0, and the other may be L255, that is, the display panel to be tested displays a black and white checkerboard image 10 .
  • the checkerboard image 10 displayed on the display panel to be tested may be adjusted according to a ratio of the display panel to be tested.
  • the checkerboard image 10 may be a checkerboard arranged in an 8 ⁇ 8 matrix.
  • a shape of each pure-color sub-image 11 of the checkerboard image 10 is a rectangle.
  • the checkerboard image 10 arranged in an 8 ⁇ 8 matrix the checkerboard may be divided according to a pixel arrangement structure of the display panel to be tested, for example, a number of rows of sub-pixels and a number of columns of sub-pixels of the display panel to be tested may be equally divided into 8 portions, to obtain a corresponding checkerboard.
  • a specific structure and matrix arrangement of the checkerboard image 10 may be set according to user requirements.
  • the method for detecting residual image of the display panel in this embodiment further includes: S 200 . controlling, after the checkerboard image has been displayed for a first predetermined time period, the display panel to be tested to display a detection image with a predetermined gray scale.
  • the detection image 20 in this embodiment has a predetermined gray scale, and the predetermined gray scale is between the first gray scale and the second gray scale.
  • the detection image 20 is an image with a preset gray scale level between a black image and a white image, that is, a brightness of the detection image 20 is for an image between a brightest image (white image) and a darkest image (black image).
  • the preset gray scale may be L127.
  • the first predetermined time period of displaying the checkerboard image 10 may be set according to user requirements, and the first predetermined time period may be 10 minutes, one hour, two hours or longer. By setting a reasonable first predetermined time period, an accuracy of detection of a residual image level of the display panel can be improved.
  • the method for detecting residual image of the display panel in this embodiment further includes: S 300 . controlling a reference display panel to display a calibration image.
  • FIG. 4 shows an exemplary schematic diagram of displaying a calibration image on a reference display panel
  • FIG. 5 shows an enlarged view of Q 1 in FIG. 4
  • FIG. 6 is an enlarged view of Q 2 in FIG. 4
  • a same filling pattern is used to represent images with a same gray scale.
  • the calibration image 30 in the embodiments of the present application includes a plurality of first matrix images 31 and a plurality of second matrix images 32 arranged in a matrix. Each of the first matrix images 31 and each of the second matrix images 32 are alternately arranged.
  • Each of the first matrix images 31 includes a plurality of first cells 311 , the number of the first cells 311 included in each of the first matrix images 31 is the same as the number of corresponding sub-pixels in each of the pure-color sub-images 11 , and a gray scale of each of the first matrix images 31 is the same as the predetermined gray scale.
  • each of the first matrix images 31 has a same display environment and a same display effect as each of the pure-color sub-images 11 , which effectively avoids affecting a calibration function of the calibration image 30 when the display effect is inconsistent.
  • a shape and size of each of the first cells 311 may be the same as a shape and size of each of the sub-pixels.
  • each of the second matrix images 32 includes a plurality of second cells 3211 .
  • the number of the second cells 3211 in each of the second matrix images 32 is the same as the number of corresponding sub-pixels in each of the pure-color sub-images 11 .
  • a shape and size of each of the second cells 3211 is the same as a shape and size of each of corresponding sub-pixels in each of the pure-color sub-images 11 .
  • Gray scales of each of the second matrix images 32 include a third gray scale and a fourth gray scale, wherein the third gray scale is the same as the predetermined gray scale, the fourth gray scale is different from the predetermined gray scale, and a residual image level has a corresponding relationship with a ratio of the number of second cells 3211 with the third gray scale to the number of second cells 3211 with the fourth gray scale.
  • an image displayed in each of the second cells 3211 is a pure-color image.
  • a difference between the third gray scale and the fourth gray scale is one gray scale.
  • the preset gray scale may be L127
  • the third gray scale is L127
  • the fourth gray scale is L126 or L128.
  • the difference between the third gray scale and the fourth gray scale may be set according to user requirements, and the difference between the third gray scale and the fourth gray scale may also be two gray scales or even more.
  • the method for detecting residual image of the display panel in this embodiment further includes: S 400 . comparing the detection image and the calibration image to obtain a residual image level of the display panel to be tested.
  • the tester may compare the detection image 20 and the calibration image 30 , for example, may visually compare a brightness difference of the detection image 20 and a brightness difference of the calibration image 30 within a predetermined time period, to obtain the residual image level of the display panel to be tested.
  • the brightness difference of the detection image 20 and the brightness difference of the calibration image 30 may also be collected by a brightness collection device, and the detection image 20 and the calibration image 30 may be compared to obtain the residual image level of the display panel to be tested.
  • the tester can accurately determine whether the brightness difference of the detection image 20 is consistent with the brightness difference of the calibration image 30 , to accurately detect the residual image level of the display panel, and reduce a uncertainty of different residual image testers in a residual image test of the display panel to be tested, so that the residual image level of the display panel to be tested can be objectively and accurately evaluated, so as to provide a reliable basis for a quality evaluation of the display panel.
  • FIG. 7 shows a schematic flowchart of a method for detecting residual image of a display panel according to another embodiment of the present application.
  • the method for detecting residual image of the display panel before step S 300 of controlling the reference display panel 120 to display the calibration image 30 , the method for detecting residual image of the display panel further includes: S 250 of forming the calibration image.
  • Step S 250 of forming the calibration image includes: forming the first matrix images 31 based on the number of corresponding sub-pixels in each of the pure-color sub-images 11 in the display panel to be tested and the predetermined gray scale; forming the second matrix images 32 based on the number of corresponding sub-pixels in each of the pure-color sub-images 11 in the display panel to be tested, the predetermined gray scale, and the residual image level; and arranging the first matrix images 31 and the second matrix images 32 alternately and in a matrix to form the calibration image 30 .
  • MATLAB software may be used to make the calibration image 30 , wherein a shape and size of each of the first matrix images 31 are the same as a shape and size of each of the pure-color sub-images 11 in the display panel to be tested, so that a display environment of each of the first matrix images 31 is consistent with a display environment of one of the pure-color sub-images 11 , thereby reducing a visual impact on a tester due to different shapes and sizes of each of the first matrix images 31 and each of the pure-color sub-images 11 , and improving an accuracy of visually detecting the residual image level of the display panel to be tested by the tester.
  • a brightness change of a display image during disappearance of residual image of the display panel to be tested can be reflected more accurately, to make the residual image level of the calibration image 30 fixed, and to compare the detection image 20 whose brightness has changed with the calibration image 30 whose brightness remains fixed, so as to reduce an uncertainty caused by subjective judgment of the tester, thereby effectively reducing a difference in detecting residual image of the display panel to be tested by a same tester at different times or by different testers.
  • the calibration image 30 can be saved, copied or pasted in a form of an image file, so as to enable calibration of residual image levels of display panels to be tested at different test locations, which improves a versatility of the method for detecting residual image of a display panel according to the embodiments of the present application.
  • each of the second matrix images 32 includes a plurality of matrix sub-images 321
  • each of the matrix sub-images 321 includes a plurality of second cells 3211 arranged in a matrix.
  • the step of forming the second matrix images 32 based on the number of corresponding sub-pixels in each of the pure-color sub-images 11 in the display panel to be tested, the predetermined gray scale, and the residual image level includes: forming the matrix sub-images 321 based on the number of corresponding sub-pixels in each of the pure-color sub-images 11 in the display panel to be tested, the predetermined gray scale, and the residual image level, wherein the residual image level has the corresponding relationship with a ratio of the number of the second cells 3211 in each of the matrix sub-images 321 with the third gray scale to the number of the second cells 3211 in each of the matrix sub-images 321 with the fourth gray scale; and arranging the plurality of matrix sub-images 321 in a matrix to form each of the second matrix images 32 .
  • one of the matrix sub-images 321 may be formed using MATLAB software.
  • the one of the matrix sub-images 321 can define a residual image level, and then MATLAB software can be used to copy the one of the matrix sub-images 321 and arrange the copied matrix sub-images 321 in a matrix to form each of the second matrix images 32 , which effectively improves a production efficiency of the second matrix images 32 .
  • the number of the second cells 3211 in each of the matrix sub-images 321 with the fourth gray scale is 18+2N
  • the number of the second cells 3211 in each of the matrix sub-images 321 with the third gray scale is 18-2N.
  • a calibration image 30 with a residual image level being the second level and a calibration image 30 with a residual image level being the third level may be formed, so that the residual image level of the display panel to be tested can be calibrated more accurately, and at the same time, by reasonably setting a difference for the number of second cells 3211 in each of the matrix sub-images 321 with the fourth gray scale in different residual image levels, the calibration images 30 defining different residual image levels have obvious visual effect differences.
  • each of the matrix sub-images 321 includes the second cells 3211 arranged in a 5 ⁇ 5 matrix, in the first level, one of the number of the second cells 3211 in each of the matrix sub-images 321 with the fourth gray scale and the number of the second cells 3211 in each of the matrix sub-images 321 with the third gray scale is 13, and the other is 12.
  • the second cells 3211 with the fourth gray scale and the second cells 3211 with the third gray scale may be arranged alternately, or may be arranged randomly.
  • the calibration image 30 includes a first calibration image and a second calibration image.
  • a residual image level defined by the first calibration image is different from a residual image level defined by the second calibration image.
  • the method for detecting residual image of a display panel also includes: controlling the reference display panel 120 to simultaneously display the first calibration image and the second calibration image; and comparing the detection image 20 , the first calibration image, and the second calibration image to obtain the residual image level of the display panel to be tested.
  • the tester can visually detect a brightness difference of the detection image 20 and a brightness difference of the calibration image 30 respectively, and compare the visually detected brightness difference of the detection image 20 and the brightness difference of the calibration image 30 , to obtain the residual image level of the display panel to be tested. For example, after the second predetermined time period, if the tester obtains that the brightness difference of the detection image 20 is the same as the brightness difference of the calibration image 30 , then the tester obtains that the residual image level of the display panel to be tested at the second predetermined time period is the same as that of the calibration image 30 .
  • the tester After the second predetermined time period, if the tester obtains that the brightness difference of the detection image 20 is lower than the brightness difference of the calibration image 30 , then the tester obtains that the residual image level of the display panel to be tested at the second predetermined time period is better than the residual image level defined by the calibration image 30 . Under a condition that the reference display panel simultaneously displays the first calibration image and the second calibration image, the tester compares the visually detected brightness difference of the detection image 20 with a brightness difference of the first calibration image and a brightness difference of the second calibration image respectively, so as to obtain the residual image level of the display panel to be tested.
  • a preset changing time period of the display panel to be tested that meets requirements may be preset, and under a condition that the changing time period of the display panel to be tested is less than or equal to the preset changing time period, it indicates that the display panel to be tested is a qualified display panel, thereby improving a final quality of the display panel.
  • the method for detecting residual image in the comparative example includes: controlling a display panel to be tested to display a black and white checkerboard image; controlling, after the black and white checkerboard image has been displayed for a third predetermined time period, the display panel to be tested to display a detection image with a predetermined gray scale; and determining a time of disappearance of residual image, to obtain a residual image level of the display panel to be tested.
  • the first predetermined time period of displaying the checkerboard image in the detection method according to the embodiments of the present application is the same as the third predetermined time period in the comparative example, and the predetermined gray scales in the two methods are the same, for example, may be L127.
  • the present application provides a method for detecting residual image of a display panel and a device 100 for detecting residual image of a display panel, wherein the method for detecting residual image of a display panel controls a display panel to be tested to display a detection image 20 with a predetermined gray scale after the display panel to be tested has displayed a checkerboard image 10 for a first predetermined time period, and controls a reference display panel 120 to display a calibration image 30 that can define a residual image level.
  • each of the first matrix images 31 include first cells 311 whose number is same as a number of corresponding sub-pixels in each of pure-color sub-images 11 and making a gray scale of each of the first matrix images 31 the same as the predetermined gray scale so as to enable the first matrix images 31 and the pure-color sub-images 11 to have a same display environment and display effect
  • making each of the second matrix images 32 include second cells 3211 whose number is same as a number of corresponding sub-pixels in each of the pure-color sub-images 11 so as to enable the second matrix images 32 and the pure-color sub-images 11 to have a same display environment and display effect
  • comparing the detection image 20 and the calibration image 30 for example, comparing a brightness difference of the detection image 20 and a brightness difference of the calibration image 30 , to accurately test the residual image level of a display panel to be tested, a uncertainty of different residual image testers in a residual image test of the display panel to be tested can be reduced, the residual image level of the display panel to be tested can be objectively and accurately evaluated, so as to provide a reliable basis for a quality evaluation of the display panel.
  • FIG. 8 which shows a device for detecting residual image of a display panel according to an embodiment of the present application.
  • the embodiments of the present application also provides a device 100 for detecting residual image of a display panel, which includes a control module 110 and a reference display panel 120 .
  • the reference display panel 120 is configured to display the calibration image 30 , wherein the calibration image 30 can define a residual image level, the calibration image 30 includes a plurality of first matrix images 31 and a plurality of second matrix images 32 arranged in a matrix, each of the first matrix images 31 and each of the second matrix images 32 are arranged alternately, each of the first matrix images 31 includes a plurality of first cells 311 , a number of the first cells 311 in each of the first matrix images 31 is the same as a number of corresponding sub-pixels in each of the pure-color sub-images 11 , a gray scale of each of the first matrix images 31 is the same as the predetermined gray scale, each of the second matrix images 32 includes a plurality of second cells 3211 , a number of the second cells 3211 in each of the second matrix images 32 is the same as a number of corresponding sub-pixels in each of the pure-color sub-images 11 , gray scales of each of the second matrix images 32 includes a third gray scale and a fourth gray scale
  • the brightness collection module may collect a brightness at multiple positions of the detection image 20 and transmit the collected brightness to the processing module, the processing module calculates a difference between the brightness collected by adjacent brightness collection modules respectively and performs averaging processing on multiple brightness differences to obtain the brightness difference of the detection image 20 . Further, the brightness difference of the calibration image 30 may be measured in the same way.
  • the device 100 for detecting residual image of a display panel by displaying the calibration image 30 which can fix the residual image level, and comparing the calibration image 30 and the detection image 20 during a process of detecting residual image, an accuracy of detecting residual image can be improved, a difference caused by different testers or by a same tester at different test times can be reduced, so as to provide a reliable basis for a quality evaluation of the display panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
US17/715,531 2020-04-09 2022-04-07 Method and device for detecting residual image of a display panel Active US11749149B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN202010276323.9A CN111341233B (zh) 2020-04-09 2020-04-09 显示面板残影检测方法以及检测装置
CN202010276323.9 2020-04-09
PCT/CN2021/077888 WO2021203860A1 (zh) 2020-04-09 2021-02-25 显示面板残影检测方法以及检测装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/077888 Continuation WO2021203860A1 (zh) 2020-04-09 2021-02-25 显示面板残影检测方法以及检测装置

Publications (2)

Publication Number Publication Date
US20220230568A1 US20220230568A1 (en) 2022-07-21
US11749149B2 true US11749149B2 (en) 2023-09-05

Family

ID=71188070

Family Applications (1)

Application Number Title Priority Date Filing Date
US17/715,531 Active US11749149B2 (en) 2020-04-09 2022-04-07 Method and device for detecting residual image of a display panel

Country Status (3)

Country Link
US (1) US11749149B2 (zh)
CN (1) CN111341233B (zh)
WO (1) WO2021203860A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111341233B (zh) 2020-04-09 2022-03-22 昆山国显光电有限公司 显示面板残影检测方法以及检测装置
CN113176677A (zh) * 2020-07-28 2021-07-27 深圳同兴达科技股份有限公司 屏幕残影的测试方法
CN112539921B (zh) * 2020-11-30 2023-05-16 昆山工研院新型平板显示技术中心有限公司 目视残影测试系统
CN112349231B (zh) * 2020-12-11 2022-04-15 合肥维信诺科技有限公司 一种显示面板的残影测量方法及装置
CN114137750B (zh) * 2021-12-08 2024-05-10 武汉中海庭数据技术有限公司 一种屏幕残影检测定位的方法及装置
CN114442346B (zh) * 2022-01-25 2024-01-12 苏州华星光电技术有限公司 显示面板的残影计算方法、装置、存储介质及终端设备
CN115294901A (zh) * 2022-08-02 2022-11-04 武汉天马微电子有限公司 显示面板的残影检测方法和装置
CN117789620A (zh) * 2022-09-22 2024-03-29 京东方科技集团股份有限公司 显示面板的残像检测方法及残像检测装置
TWI824915B (zh) * 2023-01-06 2023-12-01 大陸商北京集創北方科技股份有限公司 殘影檢測裝置及方法

Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020067325A1 (en) 2000-10-19 2002-06-06 Lg.Philips Lcd Co., Ltd. Image sticking measurement method for liquid crystal display device
CN1779473A (zh) 2004-11-22 2006-05-31 台湾薄膜电晶体液晶显示器产业协会 利用视觉模型检测平面显示器的方法与装置
US20090096778A1 (en) 2007-10-12 2009-04-16 Taiwan Tft Lcd Association Method and apparatus of detecting image-sticking of display device
CN101425246A (zh) 2007-10-31 2009-05-06 台湾薄膜电晶体液晶显示器产业协会 检测显示器的残影现象的方法及装置
US20100033205A1 (en) * 2008-08-11 2010-02-11 Zhao Haiyu Apparatus and method for performing an ion concentration analysis in liquid crystal panel
CN101996591A (zh) 2009-08-28 2011-03-30 北京京东方光电科技有限公司 改善液晶显示残像的方法及液晶显示驱动装置
CN103050074A (zh) 2012-04-27 2013-04-17 京东方科技集团股份有限公司 一种显示器的残像等级评定装置及方法
CN104282251A (zh) 2014-10-28 2015-01-14 合肥鑫晟光电科技有限公司 一种显示装置的残像等级判定方法及检测装置
US20150062203A1 (en) * 2013-09-03 2015-03-05 Shenzhen China Star Optoelectronics Technology Co. Ltd. Lcd device, method for driving lcd panel, and method for compensating light spot
US20150371576A1 (en) * 2014-06-20 2015-12-24 Boe Technology Group Co., Ltd. Method and device of estimating image sticking grade of display
US20160035277A1 (en) * 2014-07-29 2016-02-04 Lg Display Co., Ltd. Organic light emitting display device and method of driving the same
US20160365025A1 (en) * 2015-06-11 2016-12-15 Boe Technology Group Co., Ltd. Regulating method and regulating apparatus for a driving voltage of a display module
CN106297613A (zh) 2016-08-08 2017-01-04 深圳市华星光电技术有限公司 一种显示屏残影检测系统及方法
US20170214911A1 (en) * 2016-01-26 2017-07-27 Shenzhen China Star Optoelectronics Technology Co., Ltd. Image-sticking inspection method for liquid crystal panel and device of the same
CN107256686A (zh) 2017-07-04 2017-10-17 上海天马有机发光显示技术有限公司 一种有机发光显示面板、其测试方法及装置及其显示方法
CN108877615A (zh) 2018-08-14 2018-11-23 京东方科技集团股份有限公司 显示面板的残像检测方法和残像检测装置
CN108922463A (zh) 2018-07-25 2018-11-30 京东方科技集团股份有限公司 显示面板的残像等级检测方法和残像等级检测装置
CN109345986A (zh) 2018-11-02 2019-02-15 合肥鑫晟光电科技有限公司 一种显示面板的残像判定方法及装置
CN110033726A (zh) 2019-05-14 2019-07-19 昆山国显光电有限公司 一种显示面板的测试方法
CN110376218A (zh) 2019-07-29 2019-10-25 昆山国显光电有限公司 显示面板残影检测方法及装置
US20200143737A1 (en) * 2018-04-10 2020-05-07 Hefei Xinsheng Optoelectronics Techology Co., Ltd. Image processing method, image processing device, display device and storage medium
US20200160801A1 (en) * 2017-06-26 2020-05-21 HKC Corporation Limited Method and device for adjusting grayscale of display panel
CN111341233A (zh) 2020-04-09 2020-06-26 昆山国显光电有限公司 显示面板残影检测方法以及检测装置

Patent Citations (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020067325A1 (en) 2000-10-19 2002-06-06 Lg.Philips Lcd Co., Ltd. Image sticking measurement method for liquid crystal display device
CN1779473A (zh) 2004-11-22 2006-05-31 台湾薄膜电晶体液晶显示器产业协会 利用视觉模型检测平面显示器的方法与装置
US20090096778A1 (en) 2007-10-12 2009-04-16 Taiwan Tft Lcd Association Method and apparatus of detecting image-sticking of display device
CN101425246A (zh) 2007-10-31 2009-05-06 台湾薄膜电晶体液晶显示器产业协会 检测显示器的残影现象的方法及装置
US20100033205A1 (en) * 2008-08-11 2010-02-11 Zhao Haiyu Apparatus and method for performing an ion concentration analysis in liquid crystal panel
CN101996591A (zh) 2009-08-28 2011-03-30 北京京东方光电科技有限公司 改善液晶显示残像的方法及液晶显示驱动装置
CN103050074A (zh) 2012-04-27 2013-04-17 京东方科技集团股份有限公司 一种显示器的残像等级评定装置及方法
US20150062203A1 (en) * 2013-09-03 2015-03-05 Shenzhen China Star Optoelectronics Technology Co. Ltd. Lcd device, method for driving lcd panel, and method for compensating light spot
US20150371576A1 (en) * 2014-06-20 2015-12-24 Boe Technology Group Co., Ltd. Method and device of estimating image sticking grade of display
US20160035277A1 (en) * 2014-07-29 2016-02-04 Lg Display Co., Ltd. Organic light emitting display device and method of driving the same
CN104282251A (zh) 2014-10-28 2015-01-14 合肥鑫晟光电科技有限公司 一种显示装置的残像等级判定方法及检测装置
US20160365025A1 (en) * 2015-06-11 2016-12-15 Boe Technology Group Co., Ltd. Regulating method and regulating apparatus for a driving voltage of a display module
US20170214911A1 (en) * 2016-01-26 2017-07-27 Shenzhen China Star Optoelectronics Technology Co., Ltd. Image-sticking inspection method for liquid crystal panel and device of the same
CN106297613A (zh) 2016-08-08 2017-01-04 深圳市华星光电技术有限公司 一种显示屏残影检测系统及方法
US20200160801A1 (en) * 2017-06-26 2020-05-21 HKC Corporation Limited Method and device for adjusting grayscale of display panel
CN107256686A (zh) 2017-07-04 2017-10-17 上海天马有机发光显示技术有限公司 一种有机发光显示面板、其测试方法及装置及其显示方法
US20200143737A1 (en) * 2018-04-10 2020-05-07 Hefei Xinsheng Optoelectronics Techology Co., Ltd. Image processing method, image processing device, display device and storage medium
CN108922463A (zh) 2018-07-25 2018-11-30 京东方科技集团股份有限公司 显示面板的残像等级检测方法和残像等级检测装置
CN108877615A (zh) 2018-08-14 2018-11-23 京东方科技集团股份有限公司 显示面板的残像检测方法和残像检测装置
CN109345986A (zh) 2018-11-02 2019-02-15 合肥鑫晟光电科技有限公司 一种显示面板的残像判定方法及装置
CN110033726A (zh) 2019-05-14 2019-07-19 昆山国显光电有限公司 一种显示面板的测试方法
CN110376218A (zh) 2019-07-29 2019-10-25 昆山国显光电有限公司 显示面板残影检测方法及装置
CN111341233A (zh) 2020-04-09 2020-06-26 昆山国显光电有限公司 显示面板残影检测方法以及检测装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
International Search Report (with English Translation) and Written Opinion dated May 20, 2021, in corresponding International Application No. PCT/CN2021/077888, 13 pages.
Notification to Grant Patent Right for Invention dated Feb. 28, 2022, in corresponding to Chinese Application No. 202010276323.9, 7 pages (with English Translation).

Also Published As

Publication number Publication date
CN111341233B (zh) 2022-03-22
CN111341233A (zh) 2020-06-26
WO2021203860A1 (zh) 2021-10-14
US20220230568A1 (en) 2022-07-21

Similar Documents

Publication Publication Date Title
US11749149B2 (en) Method and device for detecting residual image of a display panel
CN103985333A (zh) 一种显示装置的伽马值测量的方法
EP2975602B1 (en) Method and device for determining the level of residual image of display
CN112365845B (zh) 伽马调试方法和伽马调试装置
US8164603B2 (en) Methods of measuring image-sticking of a display
CN102968943B (zh) 显示器件伽马值测试卡的生成方法及伽马值的测量方法
US20110057944A1 (en) Method of establishing a gamma table
US9530337B2 (en) Test method and test apparatus for transparent display device
CN103050074A (zh) 一种显示器的残像等级评定装置及方法
CN109978864A (zh) 显示面板检测系统、方法、装置以及存储介质
US20190266932A1 (en) Testing method for splicing screens
CN108508637A (zh) 一种显示面板的检测方法、装置及自动光学检测设备
KR101032788B1 (ko) 계란 신선도 검사 장치
CN104658461A (zh) 显示器发光均匀性的测试方法
CN103500560A (zh) 一种处理显示模组亮度数据方法、系统及显示器件
WO2006120853A1 (ja) 試験装置、試験方法、および半導体デバイス
CN104375290B (zh) 隔垫物检测方法和设备
CN109164610A (zh) 显示面板测量方法及设备
CN101571449A (zh) 屏幕色阶测试装置及方法
CN101178422B (zh) 字符型发光器件检测方法
Lee et al. P‐33: A Measurement and Analysis Method of Image Sticking in LCD
CN106713907A (zh) 一种显示器的hdr图像显示性能评测方法及装置
CN107450205A (zh) 一种lcm屏测试方法及其装置
CN114295330B (zh) 屏幕测试方法、装置及计算机可读存储介质
CN116540436B (zh) 显示面板光晕的测试方法及其测试系统

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD, CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HUANG, ZHIJUAN;WANG, ZHIXIANG;REEL/FRAME:059540/0358

Effective date: 20220406

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STCF Information on status: patent grant

Free format text: PATENTED CASE